OLD COINS TURN TO GOLD DESIGN: Problem or Research Question: How does zinc effects the color change in a copper penny? Hypothesis: If copper and zinc comes together‚ then it will form brass‚ which gives gold color to copper penny. Variables: There were no variables at this experiment PROCEDURES: Materials: Zinc (SN) filling‚ 3M NaOH solution‚ Copper penny‚ tongs‚ Hot plate‚ 100 ml beaker‚ 250 ml beaker‚ Bunsen burner‚ Water‚ Spoon. Procedure: First‚ we turned on the hot plate.
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of Chemical Engineering CHME 426 –Chemical Engineering Laboratory III Title Page (Full Report) Title of the Experiment: Reaction through three CSTR in series Submitted by: Group (4) Section: Female 1. Name: Amina Ali ID: 200550284 2. Name: Duaa Tabarak ID: 200553858 3. Name: Mariam Rustom ID: 200552242 Date of experiment: 31st March‚ 2010 Date of submission: 11th April‚ 2010 Grades: Report presentation………………………………………… /15 Abstract and Objective(s)……………………………………/10 Introduction
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Chemistry lab on Alcohols Cristina Tolosa Jhony Arias Data Collection: Table One: absorbance recorded with the different substances Try one Try two Substance Absorbance Substance Absorbance 4ml of water‚ 0 ml of ethanol 0.0000 4ml of water‚ 0 ml of ethanol 0.000 3ml of water‚ 1 ml of ethanol 0.125 3ml of water‚ 1 ml of ethanol 0.058 2 ml of water‚ 2ml of ethanol 0.147 2ml of water‚ 2ml of ethanol 0.087 1ml of water‚ 3ml of ethanol 0.153 1ml of water‚ 3 ml of ethanol 0.099 0 ml of
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References: http://webs.mn.catholic.edu.au/physics/emery/measurement.htm#Measurement http://www.digipac.ca/chemical/sigfigs/experimental_errors.htm http://www.tsb.gc.ca/eng/rapports-reports/rail/2011/r11v0057/r11v0057.pdf
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EXPERIMENT NO. 1 INTRODUCTION TO LAB INSTRUMENTS. 1. BREADBOARD We should be familiar to the following things about a breadboard: * What is a breadboard and what is it used for? * How does it work? * Setting Up. * Limitations. What is a breadboard and what is it used for? A breadboard (or protoboard) is usually a construction base for prototyping of electronics. The term "breadboard" is commonly used to refer to a solderless breadboard (plugboard). It was designed by
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Abstract: This report presents the reason why the ocean does not freeze in the winter. Since the ocean consists of salt water‚ an experiment was done to test the effect of freezing on salt water compared to pure water. The experiment was conducted three times in order to obtain accurate results and eliminate errors. In addition to the salt and pure water experiment‚ a variation of this experiment was created to test other options. In the variation experiment the effect of freezing on sugar water
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INTRODUCTION There are many reasons for knowing the identity of microorganisms. The reasons range from the knowing the causative agent of a disease to knowing the correct microorganism in order to make antibiotics. This study was done by applying the following methods; OF Glucose‚ Indole Production‚ and Malonate Utilization test for the identification of an unknown bacterium. The methods will assist in determining the unknown bacterium found in a 55 year old male that was passing blood and mucous
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cultural drinking experience in 1st year students. Abstract Summary of the research: 100-150 words Introduction‚ method (drop of the design)‚ Results (inferential statistic‚ Why is it significant)‚ Discussion. Compose at the end. Introduction About 800 words Introduces the area theorem or topic etc. Evidence (pull out the criticism) Rationale H1: Extroverts have a higher pain threshold than introverts H0: Extroverts do not have a higher pain threshold than introverts Methods Design
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x2 within participant design experiment consisted of two phases. The first phase was a study phase (60 trials) in which participants were asked to process words (5-7 letters in length) to different depths by answering (yes/ no) to various questions about the words (typeface (upper/lower)‚ phonemics and meaning)‚ all presented for 200ms. The second phase was a surprised memory phase (120 trials) that measured the proportion of yes responses between 60 ‘old’ words and the 60 ‘new’ words. ‘Old’ words
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coordination to a metal ion. PROCEDURE: (A) Preparation of Trans-Dichlorobis(ethylenediamine)cobalt(III) chloride 1. About 16g of cobalt(II)chloride hexahydrate is dissolved in 50ml of distilled water in 250ml of Erlenmeyer flask. 2. 60ml of 10% solution of ethylenediamine is added into the flask. 3. A vigorous stream of air is being drawn through the solution for about 1-2 hours 4. 35ml of concentrated hydrochloric acid is added 5. The solution is then being evaporated on a steam bath until
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